Stems erect, often clustered, hollow below, 40–90 cm. Herbage glabrate to strigose. Leaflets oblanceolate to obovate, 3–7 cm long; stipules broader but shorter. Raceme dense, 10–20 cm long, longer than the leaves. Flowers 18–30 mm long; calyx pubescent; sepals 3–4 mm long. Legume erect, pubescent, straight, 4–6 cm long with 5 to 15 seeds (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
Our plants are varieties montana
(B.L. Rob. ex Piper) H. St. John.
Moist meadows, thickets, sagebrush steppe, forest, often along streams; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)